| (19) |
 |
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(11) |
EP 0 161 869 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
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25.11.1987 Bulletin 1987/48 |
| (43) |
Date of publication A2: |
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21.11.1985 Bulletin 1985/47 |
| (22) |
Date of filing: 01.05.1985 |
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| (84) |
Designated Contracting States: |
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AT CH DE FR GB IT LI SE |
| (30) |
Priority: |
09.05.1984 US 608480
09.05.1984 US 608481
|
| (71) |
Applicant: MINNESOTA MINING AND MANUFACTURING COMPANY |
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() |
|
| (72) |
Inventors: |
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- Broberg, David E. c/o Minnesota Mining and
()
- Larkey, Thomas W. c/o Minnesota Mining and
()
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| |
|
| (54) |
Coated abrasive product incorporating selective mineral substitution |
(57) © Replacement of all or most of the coarse mineral in a coated abrasive product by
a superior (and typically more expensive) mineral improves abrading performance significantly
more than would be predicted. In some cases the performance is superior to that of
products made with either mineral alone. Typically 5% to 30% of the total mineral
weight is made up of the superior mineral.